Pennzoil HD30 Motor Oil, 1-Gallon: * Active Cleansing Agents * Specially formulated for stop-and-go driving * Helps keep engines clean * Provides wear protection * Controls high-temperature oxidation and deposits * Helps protect emissions systems * Low-friction formula helps improve gas mileage compared to higher viscosities or older service categories * Protects engines under severe driving conditions to help prolong engine life